Cita APA (7th ed.)

Engel, K. (1995). Genetically modified foods: Safety issues. American Chemical Society.

Cita Chicago (17th ed.)

Engel, Karl-Heinz. Genetically Modified Foods: Safety Issues. Washington, DC: American Chemical Society, 1995.

Cita MLA (9th ed.)

Engel, Karl-Heinz. Genetically Modified Foods: Safety Issues. American Chemical Society, 1995.